<svg xmlns="http://www.w3.org/2000/svg" width="48" height="48" version="1.1">
 <circle style="opacity:0.2" cx="24" cy="25" r="20"/>
 <circle style="fill:#575757" cx="24" cy="24" r="20"/>
 <circle style="opacity:0.2" cx="24" cy="25" r="16"/>
 <path style="opacity:0.1;fill:#ffffff" d="M 24,4 A 20,20 0 0 0 4,24 20,20 0 0 0 4.0215,24.582 20,20 0 0 1 24,5 20,20 0 0 1 43.979,24.418 20,20 0 0 0 44,24 20,20 0 0 0 24,4 Z"/>
 <circle style="fill:#6e6e6e" cx="24" cy="24" r="16"/>
 <circle style="opacity:0.2" cx="24" cy="25" r="12"/>
 <circle style="fill:#818181" cx="24" cy="24" r="12"/>
 <circle style="opacity:0.2" cx="24" cy="25" r="8"/>
 <circle style="fill:#a4a4a4" cx="24" cy="24" r="8"/>
 <circle style="opacity:0.2" cx="24" cy="25" r="4"/>
 <circle style="fill:#e4e4e4" cx="24" cy="24" r="4"/>
 <path style="fill:#ffffff;opacity:0.1" d="M 24 8 A 16 16 0 0 0 8 24 A 16 16 0 0 0 8.0214844 24.580078 A 16 16 0 0 1 24 9 A 16 16 0 0 1 39.978516 24.419922 A 16 16 0 0 0 40 24 A 16 16 0 0 0 24 8 z"/>
 <path style="fill:#ffffff;opacity:0.1" d="M 24 12 A 12 12 0 0 0 12 24 A 12 12 0 0 0 12.019531 24.59375 A 12 12 0 0 1 24 13 A 12 12 0 0 1 35.980469 24.40625 A 12 12 0 0 0 36 24 A 12 12 0 0 0 24 12 z"/>
 <path style="fill:#ffffff;opacity:0.1" d="M 24 16 A 8 8 0 0 0 16 24 A 8 8 0 0 0 16.021484 24.576172 A 8 8 0 0 1 24 17 A 8 8 0 0 1 31.978516 24.423828 A 8 8 0 0 0 32 24 A 8 8 0 0 0 24 16 z"/>
</svg>
